phylogeography of two east asian species in croomia (stemonaceae) inferred

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1、MolecularPhylogeneticsandEvolution49(2008)702–714ContentslistsavailableatScienceDirectMolecularPhylogeneticsandEvolutionjournalhomepage:www.elsevier.com/locate/ympevPhylogeographyoftwoEastAsianspeciesinCroomia(Stemonaceae)inferredfromchloroplastDNAandISSRfingerprintingvariationa,b,caa,*adb,*En-Xi

2、angLi,SunYi,Ying-XiongQiu,Jiang-TaoGuo,HansPeterComes,Cheng-XinFuaLaboratoryofSystematicandEvolutionaryBotany,DepartmentofBiology,CollegeofLifeScience,ZhejiangUniversity,Hangzhou310058,PRChinabStateConservationCenterforGeneResourcesofEndangeredWildlife,ZhejiangUniversity,Hangzhou310058,PRChinacC

3、ollegeofLifeScience,NanchangUniversity,Nanchang330029,PRChinadDepartmentofOrganismicBiology,SalzburgUniversity,A-5020Salzburg,AustriaarticleinfoabstractArticlehistory:ThegenusCroomia(Stemonaceae)comprisesthreeherbaceousperennialspeciesthataredistributedinReceived31July2007temperate-deciduousfore

4、stsinSoutheasternNorthAmerica(C.pauciflora)andEastAsia(C.japonica,Revised11September2008C.heterosepala).ThetwoAsianspecieshaveabuttingrangesinSouthJapan,butC.japonicaalsooccursAccepted16September2008disjunctivelyontheadjacentAsiaticmainlandinEastChina.InourphylogeneticanalysisofCroomia,Availableo

5、nline30September2008basedonchloroplast(cp)DNAsequencevariationofthetrnL-Fregion,androotedwithStemonaspp.,thetwoAsianspeciesareidentifiedassisterthatlikelydivergedintheMid-to-LatePleistocene(0.84–Keywords:0.13mya),whereasthedivergenceofC.paucifloradatesbacktotheLatePlio-/Pleistocene(<2.6mya).Croomi

6、aPhylogeographicalanalysisofthetwoEastAsianspeciesdetectedsevencpDNA(trnL-F)haplotypestrnL-FISSRsacross16populationssurveyed,andallofthosewerefixedforaparticularcpDNAhaplotype(HE=0.0,JapanandEastChinaGST=1).Asurveyofinter-simplesequencerepeats(ISSRs)markersalsodetectedremarkablylowlevelsPhylogeog

7、raphyofwithin-populationdiversity(C.japonica:HE=0.085;C.heterosepala:HE=0.125),andhighlevelsofPopulationgeneticsinter-populationdifferentiation(C.japonica:UST=0.736;C.heterosepala:UST=0.550),atleastpartlyVicarianceduetoprono